My wife told me that her mother, Eriko, would be staying over. I casually replied "okay," but inside, I was thrilled. Eriko is lovely and beautiful, with a soft, voluptuous figure and a cheerful, innocent personality. Last time, I caught just a quick glimpse of her breasts—but this time, she's staying for four nights. She came home late at night, clearly drunk. Normally, my wife would help me take care of her, but tonight, I was alone. I carried Eriko in my arms to the bedroom and gently laid her down. That's when I accidentally touched the soft curve of her breast...